David Keene is Owner and Executive Editor of digiDaybook, a media and content marketing consultancy for the AV industry. His extensive involvement in pro AV and digital signage includes content creation and team leadership for top industry players in all parts of the AV ecosystem: equipment manufacturers, publishers, trade associations, and service/solution providers. He can be reached at DavidKeene@digiDaybook.com
@digiDaybook
Jeffry Alfred Bautista Evangelista
Electronic Technician, Ministry of Interior Coastguard Qatar
Electronics Engineer with over 10 years of experience in the broadcast media industry, proficient in broadcast design, integration, operations, corrective and preventive maintenance of broadcast systems, Electronic Telecoms Support, ELV Systems, and supporting broadcast chains.
Jason "Jay" Jacoby (they/them) has spent the last 10+ years, working with integration firms guiding teams through multi-million dollar projects from conception to execution. Jay’s work as a program and project manager includes multiple types of projects ranging from corporate, communication collaboration, experiential, broadcast, digital signage and large venue sound. They recently returned to Diversified after working for a year with Shen, Milsom, & Wilke as an Audiovisual consultant. Jay is currently based out of New Jersey. #avtweeps
I’m Douglas Hoag, Principal Consultant and owner of DCH Technology Consulting, based in Chicago, IL. With more than 15 years in the audiovisual industry, I specialize in consulting, design, and owner’s representative services for complex built environments. My work spans courtrooms, council chambers, emergency operations centers, police stations, and corporate experience spaces, where technology must seamlessly support both in-person and hybrid collaboration.
At DCH Technology Consulting, I take a human-centered design approach—balancing AVIXA, SMPTE, AES, ANSI, and AIA best practices with real-world workflows. My background includes global technology standardization efforts with Fortune 500 clients as well as civic projects requiring coordination between state and county stakeholders. I focus on creating cohesive, intuitive systems that support transparency, equitable conferencing, and future-ready infrastructure through solutions like AVoverIP, broadcast integration, and smart workflow design.
I’m passionate about helping architects, owners, and technology teams bring their vision to life with audiovisual systems that feel intentional, intuitive, and built to last.